Home / 16,771.91-23,145.79-9,218.51

Finding the Fourth Proportional to 16,771.91, 23,145.79 and 9,218.51

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Solution

The fourth proportional to 16,771.91, 23,145.79 and 9,218.51 is: 12,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,771.91 : 23,145.79 = 9,218.51 : x
  2. Step 2: Convert to fraction form
    16,771.91/23,145.79 = 9,218.51/x
  3. Step 3: Cross multiply
    16,771.91x = 23,145.79 × 9,218.51
  4. Step 4: Simplify right side
    16,771.91x = 213,369,696.57
  5. Step 5: Solve for x
    x = 213,369,696.57/16,771.91
  6. Step 6: Final answer
    x = 12,721.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.